Improvement in aer-heating fomaces



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T0 ALL PERSONS TO WHOM THESE PRESENTS SHALL COME:

Be it known tthatl, AGEORGE W. WILsoN, of Chelsea, in the county of Suffolk, and State of Massaehusetts, `have invent-ed an improved Air-Heating Furnace for warming buildings; and do hereby declare the same .to

be fully described in the following specification, and represented in the accompanying drawings. Ofeueh Figure l is a front end view. i Figure 2. a rear end elevation.

Figure 3, a side elevation.

Figure 4, a longitudinal section and Figure 5 a transverse section of such furnace. v

These-id furnace is to be constructed mostly if'not entirely of cast iron, and when used is, with the except-ion of its front end-plate, to be enclosed in an air-receiving chamber provided with suitable inlets or passages and outlets, whereby air, while flowing through such chamber, may be heated by means of the said furnace.

In the drawings, A denotes the fire-place, or,chau1ber of combustion, and B the ash-chamber, the former being arranged over the latter, andV being provided 'with a.' rotary grate, C. The chamber'A is arched at top, and has long passages a a leading out o f it laterally, and from its opposite sides into and through two abutmentS,.D D, which are extended from Vand cast in one piece with the {ire-place, and serve as supports for an -arched =radiator', E, which spans the dome or larch oflthe fireplace. concentrically or theres-bouts, therebeing an air-heating space, F, between the two. The said space is'open at its two extremities. The said radiator E opens at its top by a conduit. b, into :mother radiator, G, situated over it, and provided with pipes, c d, to

' project from and open out of its opposite ends. IOne of such pipes opens through the front plate H of 'the furnace by a man-hole, e, provided with a cover,.f. 'The other of such pipes has a damper,'g, placed'within it, such damper having a rod, la, to extend from the crank-arm of the shaft, and to and, through the said front plate. Two elbow pipes I l lead laterally out of'the front part oi' the auxiliary radiator G, and into two U-shaped conductors or radiators K K, arranged with respect to the main radiator and the front plate in manner as represented in the drawings.- Each leg of each Usbaped radiator may open through the fro-nt plate 'and be provided with a cover, such being toV enable the interior surface of the U-shaped radiator to be cleaned as occasion may require.- Each of the two U-shapedA radiators K K communicates near its front end, by a branch pipe, i; with one oi' two bent pipes L L, formed and arranged with the U-shaped radiator as represented. Each 'of the pipes L L opens at its frontend through the front plate H, the opening being provided with aeovcr. At lits other end thc pipe L leads or opens int the rear pipe d of the radiator G. An escape pipe, M, is to lead out of the top of' the pipe d, such pipe d at its rear end being 'open and extended through the brickwork of the airichamber. When the furnace is in operation the mouth or rear end of the pipe i is to be closed by a cover. A conduit, N, leads out the rear. end of the ash-chamber, and may extend to the outside of thcbrick-work in which the furnace may be encased. A stand pipe, O, erected on the pipe N, and .opening out of it, opens at top into the pipe d, and is provided with a damper, k, Whiclris arranged and furnished withv an operating rod, l', as shown in Vthe drawings, (fig. 4.) Within the main radiator is :i scraper, P, which extends across it, und is aflixcd to a slide-rod, Q, going horizontally through the radiator and the front plate H. By means of such rod the scraper may be moved from end to end of the radiator, and upon its inner surface,` in

order to `cleanse i-l: of soot or ashy deposits and cause such to 'fall into the fire-place. The grate C oi' the tire A place has its journals lm extended through and supported by two swing-plates R R, arranged at opposite parts of the tire-place in manner as represented in fig. 4. Each of such plates extends across and forms part of the lire-place, and at its upper corners is provided with journals n n, t rest in suitable bearings, the whole beipg to enable the said plates with the grate to swing back' "and forth, in order that, by such a movement of the igrate, cinders and ashes when thereon may be shaken through it into theash-chamber, and upon its grate y.

(in opposite sides of thc fire-place Inouthjo are two air-inlet registers, s s, for letting air into the llame as it may rush out the passages loading through the abutinents ou which themain radiator is supported. Y

ln the operation of this furnace the smoke and volatile products of combustion pass from the fire-place through the abutments, and into the main radiator. Circulating therein, they'heat its curved top and bottom whereby heat will be radiated therefrom into the space between the radiator and the arch of the fire-place, and also that over the radiator. As the space between thc said radiator and the front plate H of the furnace is open in front, and as also such space is open in rear, the air of the hot-air chamber can circulate freely through it. The smoke passes from the main into the auxiliary radiator, andfrom thence it may be. allowed to escape directly through its pipe, d, or by closing the damper in auch pipe the smoltel mayv be made to -iiow into the U radiators, and from thence into and through the bent pipes L L, and thence into the escape flue, the said smoke, in its passage through such pipes, heating them, whereby they will radiate heat into the surrounding air. By closing the damper of the pipe d, and opening 'that of the stand pipe O, the smoke and volatile products of combustion may be caused t-o pass through the fuel andthe grate of the {ire-place into the ash-chamber, and thence into and through the stand pipe, rather than the several radiators. In this way, the heat of a lire, when it may not be desirable to carry the smoke through the radiators, may be discharged through the stand pipe. v

Having thus described my eaid furnace, what l claim therein as of my invention, is as follows I claim the arrangement as well as the combination of the main radiator E, the fireplace A, the hollow abutments, and the air-space between the {ire-place and main radiator.

I also claim the combination as well as the arrangement of the auxiliary radiator G, the main radiator, the ireplace, the air-space F, and the abutments D D for supporting the main radiator, and conducting smoke into it from the {ire-places.

I also claim the combination as well as ,the arrangement of the U radiators and the bent pipes L'L with thc fire-place or chamber of combustion, and either or both the radiators arranged as specified.

I also claim the application of the grate to the fire-place by means of the pendulous plates applied to the journals of such grat-e, and to the lire-place, substantially as set forth.

I also claim the combination and arrangement of the scraper P and its rod Q with the main arched radiator and the iront plate H, as explained.

I also claim the arrangement of air-registers 'with respect to the tire-place, the escape-passages thereof,

and the front plate El, the whole being substantially as hereinbeforespeciied.

GEO. W. WILSON.

lWitnesses:

E. H. Enna', F. P. HALE, Jr. 

